What should be noted when operating a multi gradient experimental tube furnace?

When operating a multi gradient experimental tube furnace, the following precautions should be taken to ensure the safety, smooth progress, and long-term stable operation of the equipment:

1. Safety operation standards
Grounding protection:
Ensure that the tube furnace is properly grounded to prevent electrical leakage from causing safety accidents.
Temperature control:
Strictly control the furnace temperature and do not exceed the rated temperature of the equipment to avoid damaging the furnace body or causing danger.
Reasonably set the heating rate and insulation time according to the properties of the experimental materials to prevent overheating or decomposition of the materials.
Gas management:
When using gas, ensure that the gas purity meets the experimental requirements and avoid impurities affecting the experimental results.
Regularly inspect gas pipelines and valves to prevent gas leaks.
During the inflation or vacuuming process, closely observe the pressure gauge to ensure that the pressure inside the furnace is within a safe range.

2. Equipment usage and maintenance
Sample placement:
Ensure that the sample is placed steadily and avoid displacement or falling during the heating process.
The sample should be placed in the center of the furnace tube to ensure uniform heating.
Furnace tube protection:
Avoid sudden temperature changes in the furnace tube to prevent tube rupture.
Regularly clean the residue inside the furnace tube to prevent contamination during subsequent experiments.
If the furnace tube is not used for a long time, it is recommended to bake it at low temperature to remove internal moisture.
Heating element inspection:
Regularly check the integrity of the heating element and replace it promptly if it is damaged.
Avoid direct contact between heating elements and furnace tubes or samples to prevent short circuits or damage.
Maintenance of temperature control system:
Regularly check the accuracy and stability of the temperature control system, and promptly calibrate or repair any abnormalities.
Avoid placing strong electromagnetic interference sources near the temperature control system to avoid affecting its normal operation.

3. Experimental operation details
Preheating and Cooling:
Before starting the experiment, preheat the tube furnace to stabilize the temperature inside the furnace.
After the experiment is completed, wait for the furnace to cool naturally to a safe temperature before taking out the sample to avoid burns or damage to the equipment.
Recording and monitoring:
During the experiment, detailed records of parameters such as temperature, pressure, and gas flow rate are kept for subsequent analysis and comparison.
Closely observe experimental phenomena and equipment operation status, and promptly handle any abnormalities.
Emergency Management:
Familiar with emergency response procedures, in case of electric leakage, fire or other emergency situations, the power should be immediately cut off and corresponding measures should be taken.
Equip with necessary fire-fighting equipment and first aid supplies to ensure quick response in emergency situations.